RE: Location
McConahy, Ralph (RMcConahy@jbar.gdscc.nasa.gov)
Thu, 25 Mar 1999 14:20:42 -0800
Jason,
Az is like a compass:
N = 0 (or 360)
NE = 45
E = 90
SE = 135
S = 180
SW = 225
W = 270
NW = 315
After facing the proper Az, then El is from the horizon (0 degrees) to
straight overhead (90 degrees), half way between would be 45 degrees.
So, the first flare will be just east of south and quite high up.
The second flare will be nearly north (slightly east) and low in the sky.
Here are a couple of tricks: with your arm extended full-length, spread your
thumb and little finger as wide as they can go. The angle from the tip of
your thumb to your eye to the tip of your little finger is approx. 20
degrees. Doing the same using your index and little fingers is approx. 15
degrees.
Ralph McConahy
34.8829N 117.0064W 670m
> -----Original Message-----
> From: Jason E Felton [SMTP:andromedus@juno.com]
> Sent: Thursday, March 25, 1999 2:05 PM
> To: SeeSat-L@blackadder.lmsal.com
> Subject: Location
>
>
> Hello
> I need some help on where I should look for an Iridium flare
> scheduled for tonight. I'm not sure how to use the azimuth and
> elevation. Here's the info I got from the gsoc website:
> March 23 7:22:50 pm Mag -1 Elevation 61 degrees
> Azimuth 160 degrees South Mirror angle 1.6 degree.
>
> Another flare that I got had essentially the same info except that
> the
> Elevation is 25 degrees, the azimuth is 15 degrees North, and the
> mirror
> angle is 1 degree. Where should I look for that one?
>
> Thanks in advance.
> Jason Lat: 42 N Long: 86 W
>
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